Question

Part 1: Write the equation of the line that passes through the points (–1, –4) and (2, 5).

Part 2: Using complete sentences, explain whether or not it matters which point is used in the final answer. Also explain why you chose the point you did.

Answer 1

slope is important; so lets find it; subtract points and stack y/x

(2 , 5)
(–1, –4)
-------
3 , 9 ; slope = 9/3 = 3

the equation of the line is: y = mx -mPx + Py , where (Px,Py) is any point that is given

Answer 2

and m=slope :)

y = 3x -3(2)+5

y = 3x -6+5

y = 3x -1

Answer 3

since we used both points to form the line; it really doesnt matter which one we use to calibrate the equation with